EP1679030A1 - Updateable endoscopic video imaging system - Google Patents
Updateable endoscopic video imaging system Download PDFInfo
- Publication number
- EP1679030A1 EP1679030A1 EP06000378A EP06000378A EP1679030A1 EP 1679030 A1 EP1679030 A1 EP 1679030A1 EP 06000378 A EP06000378 A EP 06000378A EP 06000378 A EP06000378 A EP 06000378A EP 1679030 A1 EP1679030 A1 EP 1679030A1
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- European Patent Office
- Prior art keywords
- camera
- control unit
- data
- portable system
- module
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Images
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
- A61B1/042—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by a proximal camera, e.g. a CCD camera
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00059—Operational features of endoscopes provided with identification means for the endoscope
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
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- A61B1/00112—Connection or coupling means
- A61B1/00121—Connectors, fasteners and adapters, e.g. on the endoscope handle
- A61B1/00124—Connectors, fasteners and adapters, e.g. on the endoscope handle electrical, e.g. electrical plug-and-socket connection
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
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- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2476—Non-optical details, e.g. housings, mountings, supports
- G02B23/2484—Arrangements in relation to a camera or imaging device
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/555—Constructional details for picking-up images in sites, inaccessible due to their dimensions or hazardous conditions, e.g. endoscopes or borescopes
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- H—ELECTRICITY
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- H—ELECTRICITY
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- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/617—Upgrading or updating of programs or applications for camera control
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- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4292—Coupling light guides with opto-electronic elements the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements
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- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4298—Coupling light guides with opto-electronic elements coupling with non-coherent light sources and/or radiation detectors, e.g. lamps, incandescent bulbs, scintillation chambers
Definitions
- This application relates to a video imaging system and camera assembly including a field-upgradeable camera configured to generate computer executable image data in response to a set of prescribed imaging functions characteristic of the camera, and an updating module for upgrading the camera in the field.
- the field of video endoscopy includes medical diagnostic and therapeutic disciplines that utilize endoscopes to penetrate and view otherwise inaccessible body cavities utilizing minimally invasive surgical procedures. Coupling of video imaging cameras (incorporating solid-state imagers) to endoscopes, for image reproduction, has become standard within the field. Endoscopic video cameras are most advantageously small and lightweight for ease of use by medical personnel, and typically incorporate either single or multiple solid-state imagers. Some special purpose endoscopes have integrated (built-in) solid-state imagers, which do not facilitate direct viewing of internal body cavities by medical personnel without an accompanying video imaging system and display. To achieve the desired size and weight, camera head and/or integrated endoscope-camera assembly electronics are typically separated physically from the majority of circuitry required to process and output high-quality, color video images.
- CCU camera control unit
- Most cables for endoscopic video cameras include a fiber optic light guide for illumination, the fiber optic light guide being separately distinct from the cable transmitting electronic video signals.
- a camera assembly comprises a camera configured to generate electronic image data.
- a control unit is detachably coupled to the camera and receptive of the image data.
- a first set of data processing instructions are stored in the control unit for processing the image data.
- a second set of data processing instructions stored in the camera for processing the image data.
- At least a third set of data processing instructions are interchangeable with the second set of data processing instructions and are operative in processing the image data, where the third set of data processing instructions is different from the second set of data processing instructions. It is contemplated that any number of instructions sets may be utilized by the camera depending upon the application and procedure.
- the multiple instruction sets for the camera are stored remotely from the camera where the correct instruction set can be loaded onto the camera as needed.
- the first and second set of prescribed image functions characteristics of the camera in one embodiment may comprise for instance, camera exposure, camera focus, camera zoom, camera rotation or photo dynamic diagnosis.
- the second set of data processing instructions and third set of data processing instructions may be interchangeable to operate the camera with both sets being compatible with the first set of data processing instructions on the control unit.
- the interchangeable data processing instructions can be changed as needed to suit the environment. For example, if the camera is used in arthroscopic surgery, it may be desired to have the second set of data processing instructions operative on the camera. However, if the camera is used in intestinal surgery, it may be desired to have the third set of data processing instructions operative on the camera.
- any camera is able to operate with essentially any version of the data processing instructions.
- the desired functionality can be selected to ensure proper operation of the camera for the selected procedure.
- the control unit executes only the data processing instructions stored thereon.
- the image data is downloaded from the camera to the control unit for processing. This allows each camera to provide temporary fixes or updates to the data processing instructions stored in the control unit without having to send the control unit for service.
- the data processing instructions are architected in four layers:
- the data processing instructions in the control unit facilitate the downloading of application software and field programmable gate array (FPGA) instructions from a camera that is plugged into a camera chassis.
- Cameras may be plugged in or unplugged at any time, including when the camera is on. The presence or absence of a camera will automatically be detected.
- FPGA field programmable gate array
- the data processing instructions are capable of receiving essentially any camera at any time. This means that the control unit and the data processing instructions thereon must be capable of detecting and operating with substantially any camera. This includes single chip, three chip and progressive scan CCDs, coupled with NTSC, PAL or other video standards.
- the data processing instructions download the executable image data located on the camera.
- This executable image will work in concert with that in the control unit to provide for the overall capability required for the video imaging system. With no camera attached, the control unit will provide basic "unconnected" related functionality such as limited user menus.
- the data processing instructions in the control unit are capable of configuring both a formatter and a processor FPGA.
- the data processing instructions in the control unit download the base FPGA configuration code to the FPGA.
- the data processing instructions in the control unit reconfigures the FPGA(s) by reprogramming them with new FPGA code stored in the camera.
- the data processing instructions in the control unit are capable of downloading new instructions from the camera head. Once complete, the downloaded code is linked with the data processing instructions in the control unit, extending the capabilities to include camera-specific applications.
- the camera instructions at a minimum, include the application instructions to handle camera-specific items. Examples of this may include enhancement, brightness, and shutter functions, etc.
- Data processing instruction modules in the control unit have the ability to extend, modify, and/or replace functionality each time a camera is plugged into or unplugged from the control unit chassis.
- the data processing instructions in the control unit provide for new software drivers downloaded from the camera. Upon removal of the camera, the newly downloaded software drivers are unloaded.
- a camera assembly comprising a camera adapted to generate image data and a control unit detachably coupled to the camera and receptive of the image data.
- the camera assembly further comprises camera specific data processing instructions specific to the camera stored on the camera and control unit data processing instructions stored on the control unit.
- the camera assembly is provided such that when the camera is coupled to the control unit, the camera specific data processing instructions on the camera cooperate with the control unit data processing instructions on the control unit to transfer and process the image data from the camera to the control unit; and the image data is stored on both the camera and the control unit.
- a camera assembly comprising a camera adapted to generate image data and a control unit detachably coupled to the camera and receptive of the image data.
- the camera assembly further comprises camera specific data processing instructions specific to the camera stored on the camera, control unit data processing instructions stored on the control unit, and a light source for generating illuminating light.
- the camera assembly still further comprises a cable coupled between the camera and the control unit including a light guide coupled to the light source for transmitting the illuminating light from the light source to an object, and a channel for transmitting the image data from the camera to the control unit.
- the camera assembly is provided such that when the camera is coupled to the control unit, the camera specific data processing instructions on the camera cooperate with the control unit data processing instructions on the control unit to transfer and process the image data from the camera to the control unit.
- a camera assembly comprising a camera adapted to generate image data representative of an image and a control unit detachably coupled to the camera and receptive of the image data.
- the camera assembly further comprises a plurality of camera specific data processing instructions, and control unit data processing instructions.
- the camera assembly is provided such that when the camera is coupled to the control unit, the control unit selects the correct camera specific data processing instructions to use based on identification of the connected camera.
- a camera system comprising a camera adapted to generate image data representative of an image, and a control unit detachably coupled to the camera and receptive of the image data.
- the camera assembly further comprises a plurality of camera specific data processing instructions, control unit data processing instructions, and a light source for generating illuminating light.
- the camera assembly still further comprises a cable coupled between the camera and the control unit including a light guide coupled to the light source for transmitting the illuminating light from the light source to an object, and a channel for transmitting the image data from the camera to the control unit.
- the camera assembly is provided such that when the camera is coupled to the control unit, the control unit selects the correct camera specific data processing instructions to use based on identification of the connected camera.
- a video imaging system comprising a camera for generating image data, a control unit for controlling the camera, and a cable for connecting the camera to the control unit, the cable including a channel for transmitting camera operating information between the camera and the control unit.
- the camera assembly further comprises a light guide for transmitting illuminating light from a light source to the camera, where the cable longitudinally engages the camera so as to direct light longitudinally and completely through the camera.
- a video imaging system comprising a camera, a control unit, and a cable coupling the camera to the control unit.
- the cable is enclosed in a single protective jacket and includes at least one channel for transmitting information between the camera and the control unit, and a light guide for transmitting illuminating light to the camera.
- the video imaging system is provided such that the cable longitudinally engages the camera so as to direct the illuminating light longitudinally and completely through the camera.
- a portable system for upgrading camera operational parameters in the field comprising, a field programmable camera, a set of operation parameters for controlling the camera, and a data set indicative of a level of features a user is entitled to utilize in connection with the camera.
- the portable system further comprises a system storage accessible by the camera for storing the set of operation parameters and the data set, a portable upgrading module for updating the set of operation parameters and a module storage for storing operation parameter upgrades and data sets indicative of levels of operation parameter features a user is entitled to use.
- the portable system still further comprises a communications link established between the module and the camera, and software operating on the module for reading and updating the set of operation parameters based upon the data set.
- a portable system for upgrading control unit operational parameters in the field comprising, a field programmable camera, a set of operation parameters for controlling the control unit, and a data set indicative of a level of features a user is entitled to utilize in connection with the control unit.
- the portable system further comprises a system storage accessible by the control unit for storing the set of operation parameters and the data set, a portable upgrading module for updating the set of operation parameters and a module storage for storing operation parameter upgrades and data sets indicative of levels of operation parameter features a user is entitled to use.
- the portable system still further comprises a communications link established between the module and the control unit, and software operating on the module for reading and updating the set of operation parameters based upon the data set.
- FIG. 1 is a block diagram of the video imaging system illustrating a camera, channel connections, a control unit, and an illuminating light source.
- FIG. 2 is a depiction of a camera with a sectional view of an attached cable assembly, the control unit and the light source.
- FIG. 3 is a depiction of the control unit, the receptacle, the connector attached to the cable, and the light source.
- FIG. 4 is a depiction of the connector assembly to be advanced into the receptacle.
- FIG. 5 is a front section view of the receptacle.
- FIG. 6 is an assembly drawing of the receptacle.
- FIG. 7 is a top section view of the control unit of FIG 1 depicting the light source guide entering the control unit from the rear and connecting with the cable through the receptacle.
- FIG. 8 is a side section view of the control unit of FIG 1 depicting the light source guide entering the control unit from the rear and connecting with the cable through the receptacle.
- FIG. 9 is a depiction of a section of the camera of FIG. 2 showing four channels comprising eight electrical conductors.
- FIG. 10 is a depiction of a light source mounted within a control unit.
- FIG. 11 is a block diagram of a camera assembly showing a control unit having a first set of data processing instructions and coupled to a camera having a second set of data processing instructions and an update module.
- FIG. 12 is a block diagram of the camera assembly of FIG. 11 showing an interchangeable third set of data processing instructions.
- FIG. 13 is a block diagram of the camera assembly of FIGS. 11 and 12 showing interchangeable data processing instructions.
- FIG. 14 is a block diagram of the camera assembly of FIGS. 11, 12 and 13 showing the control unit and camera in communication with peripheral devices.
- FIG. 1 illustrates an advantageous embodiment of the video imaging system 100.
- a camera head 105 is provided having a multiplexer 110 for multiplexing image data and control signals.
- a camera control unit 115 is provided with a multiplexer 120 for receiving and processing the multiplexed signal from the camera head 105.
- a command signal channel 125 is provided interconnecting camera head 105 and camera control unit 115. The command signal channel 125 allows command signals to be sent from the camera control unit 115 to the camera head 105. Command signals include any signal transmitted from the camera control unit to the camera head.
- a control signal channel 130 is provided interconnecting camera head 105 and camera control unit 115. The control signal channel 130 allows control signals to be sent from the camera head 105 to the camera control unit 115.
- Control signals include any signal transmitted from the camera head except image data, and may include signals such as: software programs, operating information, timing signal data, camera head identification information, camera use information and the like.
- An image data channel 135 is provided interconnecting camera head 105 and camera control unit 115. The image data channel 135 allows image data to be sent from the camera head 105 to the camera control unit 115 for processing.
- control signal 130 and the image data 135 are transmitted down the same physical pair of wires, and the command signal 125 is transmitted on a second pair of wires.
- the command signal may also be multiplexed with the control signal and image data and therefore be transmitted down the same physical wire, thereby reducing the number of wires to one pair.
- multiplexers 110 and 120 may perform both multiplexing and de-multiplexing functions.
- the video imaging system utilizes a digital serial protocol such as Low-Voltage Differential Signaling.
- a light source guide 140 is also furnished to provide illuminating light from light source 145, through camera control unit 115, to camera head 105.
- a single protective jacket 150 is also provided, for enclosing the command signal channel 125, the control signal channel 130, the image data channel 135, the light source guide 140, and any additional channels that may be utilized.
- FIG. 2 illustrates an advantageous embodiment of the video imaging system 200.
- a camera head 205 is provided having a cable 210.
- the cable 210 is permanently attached to the camera head 205.
- the cable 210 may also be detachably connected to the camera head 205.
- the camera head 205 is equipped with an imager 215 for receiving photonic energy 220 reflected off an object (not shown).
- the camera head 205 is also equipped with a multiplexer 225 for multiplexing various signals generated by the camera head 205.
- the various signals may include for instance: image data generated by the imager 215, and control signals generated by the camera head 205.
- the video imaging system 200 further comprises an endoscope 260 wherein the camera head 205 receives light 270 from the light source 255 and transmits the light 270 to the endoscope 260.
- the light 270 is transmitted through the camera head 205.
- the light 270 is transmitted from the camera head 205 to the endoscope 260 through an intermediate coupling 275 mounted to the camera head 205 and a cable 280 for connecting the intermediate coupling 275 and the endoscope 260.
- the cable 210 includes a light guide channel 230 for transmitting illuminating light to the camera head 205.
- the cable 210 further includes data channels 235 for transmitting data to and from the camera head 205 and the CCU 240.
- Four data channels 235 are depicted in FIGS. 2 and 10, however fewer or more data channels 235 may be utilized.
- Image data and control signals are multiplexed in the camera head 205 by the multiplexer 225 for transmission along data channels 235.
- One of the data channels 235 may be utilized for the multiplexed signal, or any number or combination of data channels 235 may be utilized.
- the cable 210 is also provided with a protective jacket 245, encasing the light guide channel 230 and the data channels 235.
- FIG. 9 depicts a section of the camera head of FIG. 2 showing four channels comprising eight electrical conductors 235 a - h. Further in FIG. 2, the cable 210 engages the camera head 205 so as to direct light 270 longitudinally completely through the camera head 205.
- FIG. 10 is a depiction of a light source 255 mounted within a camera control unit 240.
- the CCU 240 may also be provided with a multiplexer 250 for multiplexing command signals, and for demultiplexing the image data and control signals sent from the camera head 205. It is contemplated that multiplexers 225 and 250 may both provide both multiplexing the demultiplexing functions.
- a light source 255 is also provided for generating illuminating light for the transmission by the light guide channel 230 to the camera head 205.
- the cable 210 is detachably connected to the CCU 240 as disclosed in FIGS. 3-8.
- a connector assembly for an endoscope assembly provides a connection between a camera head 305 and a source of light 310 through a CCU 315 having a front portion 330 and a rear portion 335.
- a cable 320 extending from the camera head carries a light source guide and at least one wire pair transmitting electronic signals between the CCU and the camera head.
- a light source cable 325 extends from the light source 310 through the CCU and directly engages the cable 320 in the CCU.
- the connector assembly includes a plug 405 provided with a molded body 410.
- a light connector 415 extends from a front surface 420 of the molded body 410, whereas an electrical connection, which is mostly encased in the molded body 410, has a keyed edge connector 425 projecting beyond the front surface 420.
- the light connector 415 and the keyed edge connector 425 extending through the plug 405 are in a fixed spatial relationship.
- the keyed edge connector 425 can be selected from a great variety of electrical connectors and, in the present case, is shown as a printed wiring board.
- the keyed edge connector 425 preferably terminates in the same plane as the light connector 415.
- Such structure provides for mating components of the receptacle to be similarly positioned with respect to one another.
- the light connector 415 is shown above the keyed edge connector 425.
- the molded body 410 has keying surfaces 430 for the plug as well as protection for the light connector 415 and the keyed edge connector 425 by extending from the front surface 420 beyond these connectors.
- the plug 405 is introduced through the front side. 330 of the CCU (FIG. 3) into a receptacle opening 435.
- Each of the keying surfaces 430 has the geometry that allows the plug to enter the receptacle only in a predetermined spatial position.
- each of the keying surfaces 430 of FIG. 4 has two straight portions 440, 445 inclined with respect to one another.
- the keying surfaces 430 are shaped and sized to place the plug 405 in a unique spatial position with respect to a receptacle 450 by extending complementary to an inner peripheral surface 455 of the opening 435 at the entry point for the plug 405.
- the plug is advanced 460 into the receptacle 450 as indicated to provide engagement between light connector 415 and keyed edge connector 425 with optical component 505 and electrical component 510 respectively, as shown in FIG. 5.
- the position of the optical component 505 and electrical component 510 is a mirror image of the configuration of the light connector 415 keyed edge connector 425 respectively.
- a grounding plate 605, seen in FIG. 6, is provided with a plurality of spaced-apart, resilient fingers 610 seen in FIGS. 5 and 6, which extend slightly above a bottom edge 515 of the opening 435 seen in FIG. 4.
- the receptacle 450 has a housing 615, as seen in FIG. 6, provided with a detachable front panel 620.
- the front panel 620 has a front flange 625 lying flush with the front side 330 of the CCU when assembled.
- each of the sides 630 has an elongated recess 635 receiving a respective lug 640 formed on the housing 615.
- the housing 615 receives an optical connector component of the light source cable 325 extending through the rear portion 335 of the CCU and the light connector 415 and the keyed edge connector 425 of the plug 405.
- a chamber 645 is sized so that the molded body 410 of the plug 405 extends at its full length into the receptacle 450 in an engaged position where the light connector 415 and the keyed edge connector 425 of the plug 405 engage respective components of the receptacle 450.
- the housing 615 is further provided with a collar 650 extending toward the rear portion 335 of the CCU 315 and receiving a guide element 705 as seen in FIG. 7, that linearly spans the distance between the rear portion 335 of the CCU 315 and the receptacle 450.
- An inner end of the guide element 705 slides against the collar 650 and abuts a seat 805 as seen in FIG. 8, of the housing 615 of the receptacle 450.
- An end of the light source cable 325 having an optical connection component extends beyond the guide element 705 and terminates in a rear wall 655 of the chamber 645.
- the light source cable 325 is mounted within the receptacle 450 in a fixed spatial position and is aligned with the cable 320 after the molded body 410 of the plug 405 is registered with the opening 435 of the front panel 620.
- the receptacle 450 includes an electrical component 510 comprising a socket 660.
- the socket 660 is in the same fixed spatial relationship with the optical component 505.
- the receptacle 450 is provided with a light deflector 665, which is mounted to block the light from exiting the CCU 315 from the light source cable 325 when the plug 405 is withdrawn from the receptacle 450.
- a bottom portion 675 bridges spaced apart walls 670 of the light deflector 665.
- the deflector 665 is sized so that the keying surfaces 430 of the plug 405 contacts the bottom portion 675 as the plug 405 is advanced into the receptacle 450.
- the light deflector 665 which is pivotally mounted by means of a pin 680 extending between the spaced apart walls 670 and mounted on the housing 615 of the receptacle 450, swings out of a light path. As the plug is withdrawn from the receptacle 450, the light deflector 665 swings back into the light path to confine the light inside the CCU 315.
- a flange 685 provided on the front panel 620 covers a recessed portion 690.
- the pin 680 may rotate between the bottom of the chamber 645 and the flange 685.
- the chamber 645 is dimensioned to have the rear wall 655 juxtaposed with an edge 695 of the spaced apart walls 670 along the entire path of the light deflector 665, as the plug 405 is being advanced or withdrawn from the receptacle 450.
- the rear wall 655 has a curvature of the same radius as the edge 695.
- the spaced apart walls 670 of the light deflector 665 have a triangular cross-section; however, any other cross-section allowing the light deflector 665 to swing into and out of the light path can be easily implemented. Only one advantageous embodiment is illustrated in the figures, however it will be apparent to those skilled in the art that many different embodiments may be possible for implementing the light deflector 665.
- the light deflector may be rotatable, to rotate into the path of the light as shown, but it may also be slideable, or alternatively a sensor for sensing the presence of the plug 405 in the receptacle 450, may act to disconnect, obstruct, attenuate or turn off the source of light 310 upon removal of the plug 405 from the receptacle 450. Any of these or other methods may be utilized to prevent the light from escaping upon disconnection.
- a camera assembly 1000 is shown.
- the camera assembly 1000 comprises at least one camera 1002 configured to generate electronic imaging data 1010.
- the electronic imaging data 1010 includes for example, the aforementioned command and control signals and image data of Figure 1.
- a control unit 1006 is detachably coupled at 1012 to the at least one camera 1002 and receptive of the imaging data 1010.
- a first set of data processing instructions (CEl 1 ) 1008 are stored in storage 1020 in the control unit 1006 for processing the imaging data 1010.
- a second set of data processing instructions (CEl 2 ) 1004 reside in storage 1022 on the at least one camera 1002 for processing the imaging data 1010 based upon the first set of prescribed imaging functions.
- the aforementioned processing of the imaging data 1010 includes, for example, sending, receiving, storing, sorting, ordering, digitizing, multiplexing or otherwise performing signal or data processing on the imaging data 1010.
- Update module 1030 is also illustrated in Figure 11.
- Update module 1030 includes storage 1032 having updated data processing instructions (CEl 1 ... CEl n ) 1034 located thereon for updating of the various data processing instructions.
- Two connections are shown in dashed lines 1036' and 1036" illustrating that update module 1030 may be connected to either camera 1002 or control unit 1006 for updating of the various data processing instructions (GEl 1 ... CEl n ). It should be noted that update module 1030 may further be indirectly coupled to camera 1002 through control unit 1006.
- Update module 1030 may be coupled to camera 1002 and/or control unit 1006 either by direct connection or wirelessly. It is contemplated that a wireless connection may comprise but is not limited to for instance, an infrared coupling, but may also include any other suitable coupling means such as RF, inductive, and other wireless methods. Alternatively, if the coupling means is a direct connection, the update module 1030 may comprise for instance, a card that is inserted into control unit 1006 and/or camera 1002. In either instance, update module 1030 may be used to provide updated data processing instructions to camera 1002 and/or control unit 1006.
- update module 1030 may be utilized to ascertain the update and user rights for instance, authorized the user for a.particular camera 1002 and/or control unit 1006. This is advantageous because a technician may visit a client and with the update module 1030, ascertain what if any updates and/or upgrades the user is entitled to based upon reading data that may be stored on camera 1002 and/or control unit 1006 and then provide any additional functionality and/or updates the user is entitled to. This provides for minimal down-time for routine software upgrades which allows the user to maintain fewer cameras in stock because they do not have to be sent out to the factory for upgrading. The automatic authorization reading functionality also means that fewer mistakes will be made by the technician as the update module 1030 will determine what rights the user has contracted.
- update module 1030 will gather from the camera 1002 and/or control unit 1006 data that may include for instance but is not limited to the software version number, model number, serial number, date of manufacture, service dates, software upgrade dates, owner data, and device location of camera 1002 and/or control unit 1006. This information may be advantageously stored on said update module 1030 in storage 1032 for later transmission to a computer (not shown). It is also contemplated that this camera and/or control unit data may be directly transmitted over a network to a computer system for compliance with governmental regulations. In any event, the update module 1030 may be utilized to gather this information for reporting purposes, which may take the form of for instance, a report.
- a third set of data processing instructions (CEl 3 ) 1014 is interchangeable with the second set of data processing instructions 1004 and are operative in processing the imaging data 1010.
- the camera includes imaging functions characteristic of the camera 1002 such as camera exposure (shutter speed), camera focus, camera zoom, camera rotation or photo dynamic diagnosis.
- the electronic imaging data 1010 is conveyed between the camera 1002 and the control unit 1006 by way of the command signal, control signal and image data channels 125, 130, 135 of Figure 1.
- the camera 1002 can be configured to operate differently based upon the instructions that are stored in the camera 1002.
- the camera is configured to operate according to a set of data processing instructions specific to each camera 1002 and stored in each camera 1002. This allows each camera 1002 to provide the data processing instructions necessary to support any unique features that the camera may have. Multiple camera types may be used.
- Camera types comprise a combination of characteristics, such as: standard or direct coupling interface (DCI), National Television System Committee (NTSC) or Phase Alternating Line (PAL) one chip, NTSC or PAL three chip or progressive scan sensors, photodynamic diagnosis (PDD) enabled or disabled, rotation, zoom and or focus enabled or disabled.
- DCI standard or direct coupling interface
- NTSC National Television System Committee
- PAL Phase Alternating Line
- PDD photodynamic diagnosis
- rotation zoom and or focus enabled or disabled.
- Each camera type is configured to operate differently based upon the set of data processing instructions stored therein.
- the second set of data processing instructions 1004 and the third set of data processing instructions 1014 are interchangeable and both compatible with the first set of data processing instructions 1008.
- the interchangeable data processing instructions 1004, 1014 can be changed as needed to suit the environment. For example, if the camera 1002 is used in arthroscopic surgery, the second set of data processing instructions 1004 would be operative in the camera 1002 (Fig. 11). However, if the camera 1002 is used in intestinal surgery, the third set of data processing instructions 1014 would be operative in the camera 1002 (Fig. 12).
- a plurality of data processing instructions (108, 1004, 1014, 1026) are stored in storage 1020.
- control unit 1006 Upon connection of camera 1002 with control unit 1006, control unit 1006 reads camera data 1024 and determines the correct data processing instructions to utilize. It is contemplated that the selected data processing instructions may be utilized on control unit 1006, on camera 1002 and/or both. It is further contemplated that any number of data processing instructions may be stored on storage 1020. While storage 1020 is shown located in control unit 1006, it is yet further contemplated that the storage may be local or remote to control unit 1006, for instance but not limited to connection over a network or internetwork.
- FIG 14 is a schematic representation of a camera assembly 2000 of Figures 11, 12 and 13 showing the control unit 2002 in communication with certain peripheral devices, such as a keyboard (KBD) 2012, a communications network (NET) 2016, a monitor (MON) 2020 and a recorder (REC) 2022.
- a camera 2004 is in communication 2010 with an endoscope (END) 2006 or other medical device and with the control unit 2002 at 2008.
- END endoscope
- a camera assembly wherein a camera is adapted to generate electronic image data.
- a control unit is detachably coupled to the camera and receptive of the image data.
- a plurality of data processing instructions for processing the imaging data is stored in the camera and/or the control unit. When the camera is coupled to the control unit, the plurality of data processing instructions transfer the imaging data from the camera to the control unit.
Abstract
Description
- This application relates to a video imaging system and camera assembly including a field-upgradeable camera configured to generate computer executable image data in response to a set of prescribed imaging functions characteristic of the camera, and an updating module for upgrading the camera in the field.
- The field of video endoscopy, to which the present invention generally relates, includes medical diagnostic and therapeutic disciplines that utilize endoscopes to penetrate and view otherwise inaccessible body cavities utilizing minimally invasive surgical procedures. Coupling of video imaging cameras (incorporating solid-state imagers) to endoscopes, for image reproduction, has become standard within the field. Endoscopic video cameras are most advantageously small and lightweight for ease of use by medical personnel, and typically incorporate either single or multiple solid-state imagers. Some special purpose endoscopes have integrated (built-in) solid-state imagers, which do not facilitate direct viewing of internal body cavities by medical personnel without an accompanying video imaging system and display. To achieve the desired size and weight, camera head and/or integrated endoscope-camera assembly electronics are typically separated physically from the majority of circuitry required to process and output high-quality, color video images.
- In known video imaging systems, interconnection between a camera control unit ("CCU") and a camera is achieved by means of a cable, with usually one cable end permanently fixed to the camera head, while the other cable end is detachably connected to the CCU using a connector.
- Most cables for endoscopic video cameras include a fiber optic light guide for illumination, the fiber optic light guide being separately distinct from the cable transmitting electronic video signals.
- Existing interconnections between cameras and CCUs typically comprise dedicated parallel wires to provide greater data carrying capacity. It is meant by "dedicated parallel wires" that each specific signal is transmitted by means of an individual wire, either single for power and control signals or shielded coax for image data, between a camera head and CCU. As video imaging systems develop, CCUs are becoming programmable for compatibility with various types of camera heads, adding new control features and the ability to process different types of video signals.
- One problem with current camera systems is that the camera is provided with one set of operating instructions. These instructions however may not be appropriate for many differing procedures. Presently, the physician must choose the camera based upon the type of procedure he or she is going to perform. This is highly undesirable because many more cameras must be stocked for differing procedures than would otherwise be required. This leads to higher inventory and maintenance costs. In addition, a proprietary camera for particular procedures or sets of procedures is disadvantageous because the wrong camera for a particular procedure could be selected.
- Another problem with current video systems is that when shipped from the factory cameras are equipped with current software identifying the camera and providing for configuration and camera functionality, however, this software quickly becomes outdated and must be updated as new functionality becomes available. The current updating process is burdensome because the camera must be taken out of service, shipped to the factory where updated software is installed and then is shipped back to the user. This process is highly undesirable because it requires that the user and/or institution have multiple cameras for use when frequent updates must be applied to the existing cameras.
- What is desired then is a system and method that allows a single camera to be optimized and utilized for most procedures.
- It is further desired to provide a system and method for quickly and easily updating camera software whether the software resides on the CCU and/or the camera.
- These and other objects are achieved by the provision of a system and method where a camera assembly comprises a camera configured to generate electronic image data. A control unit is detachably coupled to the camera and receptive of the image data. A first set of data processing instructions are stored in the control unit for processing the image data. A second set of data processing instructions stored in the camera for processing the image data. At least a third set of data processing instructions are interchangeable with the second set of data processing instructions and are operative in processing the image data, where the third set of data processing instructions is different from the second set of data processing instructions. It is contemplated that any number of instructions sets may be utilized by the camera depending upon the application and procedure. In one advantageous embodiment the multiple instruction sets for the camera are stored remotely from the camera where the correct instruction set can be loaded onto the camera as needed.
- The first and second set of prescribed image functions characteristics of the camera in one embodiment may comprise for instance, camera exposure, camera focus, camera zoom, camera rotation or photo dynamic diagnosis.
- The second set of data processing instructions and third set of data processing instructions may be interchangeable to operate the camera with both sets being compatible with the first set of data processing instructions on the control unit. Thus, should the camera be used in different environments, the interchangeable data processing instructions can be changed as needed to suit the environment. For example, if the camera is used in arthroscopic surgery, it may be desired to have the second set of data processing instructions operative on the camera. However, if the camera is used in intestinal surgery, it may be desired to have the third set of data processing instructions operative on the camera.
- Therefore, essentially any camera is able to operate with essentially any version of the data processing instructions. Depending upon the data processing instructions currently loaded on the camera, the desired functionality can be selected to ensure proper operation of the camera for the selected procedure. With the camera and control unit decoupled, the control unit executes only the data processing instructions stored thereon. However, when the camera and control unit are coupled to one another, the image data is downloaded from the camera to the control unit for processing. This allows each camera to provide temporary fixes or updates to the data processing instructions stored in the control unit without having to send the control unit for service.
- The data processing instructions are architected in four layers:
- 1) an application layer which is a top level set of instructions that performs the high level objectives of the camera;
- 2) a hardware abstraction layer which provides a standardized interface between the application layer and device drivers;
- 3) device drivers which are data processing instructions that directly manipulates hardware; and
- 4) a hardware layer which is the hardware itself, manipulated by the device drivers.
- The data processing instructions in the control unit facilitate the downloading of application software and field programmable gate array (FPGA) instructions from a camera that is plugged into a camera chassis. Cameras may be plugged in or unplugged at any time, including when the camera is on. The presence or absence of a camera will automatically be detected.
- The data processing instructions are capable of receiving essentially any camera at any time. This means that the control unit and the data processing instructions thereon must be capable of detecting and operating with substantially any camera. This includes single chip, three chip and progressive scan CCDs, coupled with NTSC, PAL or other video standards.
- When a camera is connected to a control unit, the data processing instructions download the executable image data located on the camera. This executable image will work in concert with that in the control unit to provide for the overall capability required for the video imaging system. With no camera attached, the control unit will provide basic "unconnected" related functionality such as limited user menus.
- The data processing instructions in the control unit are capable of configuring both a formatter and a processor FPGA. When no camera is plugged into the control unit (including when a camera is plugged in but is subsequently removed), the data processing instructions in the control unit download the base FPGA configuration code to the FPGA. When a camera is plugged in, the data processing instructions in the control unit reconfigures the FPGA(s) by reprogramming them with new FPGA code stored in the camera.
- The data processing instructions in the control unit are capable of downloading new instructions from the camera head. Once complete, the downloaded code is linked with the data processing instructions in the control unit, extending the capabilities to include camera-specific applications. The camera instructions, at a minimum, include the application instructions to handle camera-specific items. Examples of this may include enhancement, brightness, and shutter functions, etc. Data processing instruction modules in the control unit have the ability to extend, modify, and/or replace functionality each time a camera is plugged into or unplugged from the control unit chassis.
- The data processing instructions in the control unit provide for new software drivers downloaded from the camera. Upon removal of the camera, the newly downloaded software drivers are unloaded.
- In one advantageous embodiment a camera assembly is provided comprising a camera adapted to generate image data and a control unit detachably coupled to the camera and receptive of the image data. The camera assembly further comprises camera specific data processing instructions specific to the camera stored on the camera and control unit data processing instructions stored on the control unit. The camera assembly is provided such that when the camera is coupled to the control unit, the camera specific data processing instructions on the camera cooperate with the control unit data processing instructions on the control unit to transfer and process the image data from the camera to the control unit; and the image data is stored on both the camera and the control unit.
- In another advantageous embodiment a camera assembly is provided comprising a camera adapted to generate image data and a control unit detachably coupled to the camera and receptive of the image data. The camera assembly further comprises camera specific data processing instructions specific to the camera stored on the camera, control unit data processing instructions stored on the control unit, and a light source for generating illuminating light. The camera assembly still further comprises a cable coupled between the camera and the control unit including a light guide coupled to the light source for transmitting the illuminating light from the light source to an object, and a channel for transmitting the image data from the camera to the control unit. The camera assembly is provided such that when the camera is coupled to the control unit, the camera specific data processing instructions on the camera cooperate with the control unit data processing instructions on the control unit to transfer and process the image data from the camera to the control unit.
- In still another advantageous embodiment a camera assembly is provided comprising a camera adapted to generate image data representative of an image and a control unit detachably coupled to the camera and receptive of the image data. The camera assembly further comprises a plurality of camera specific data processing instructions, and control unit data processing instructions. The camera assembly is provided such that when the camera is coupled to the control unit, the control unit selects the correct camera specific data processing instructions to use based on identification of the connected camera.
- In yet another advantageous embodiment a camera system is provided comprising a camera adapted to generate image data representative of an image, and a control unit detachably coupled to the camera and receptive of the image data. The camera assembly further comprises a plurality of camera specific data processing instructions, control unit data processing instructions, and a light source for generating illuminating light. The camera assembly still further comprises a cable coupled between the camera and the control unit including a light guide coupled to the light source for transmitting the illuminating light from the light source to an object, and a channel for transmitting the image data from the camera to the control unit. The camera assembly is provided such that when the camera is coupled to the control unit, the control unit selects the correct camera specific data processing instructions to use based on identification of the connected camera.
- In still another advantageous embodiment a video imaging system is provided comprising a camera for generating image data, a control unit for controlling the camera, and a cable for connecting the camera to the control unit, the cable including a channel for transmitting camera operating information between the camera and the control unit. The camera assembly further comprises a light guide for transmitting illuminating light from a light source to the camera, where the cable longitudinally engages the camera so as to direct light longitudinally and completely through the camera.
- In yet another advantageous embodiment a video imaging system is provided comprising a camera, a control unit, and a cable coupling the camera to the control unit. The cable is enclosed in a single protective jacket and includes at least one channel for transmitting information between the camera and the control unit, and a light guide for transmitting illuminating light to the camera. The video imaging system is provided such that the cable longitudinally engages the camera so as to direct the illuminating light longitudinally and completely through the camera.
- In still another advantageous embodiment a portable system for upgrading camera operational parameters in the field is provided comprising, a field programmable camera, a set of operation parameters for controlling the camera, and a data set indicative of a level of features a user is entitled to utilize in connection with the camera. The portable system further comprises a system storage accessible by the camera for storing the set of operation parameters and the data set, a portable upgrading module for updating the set of operation parameters and a module storage for storing operation parameter upgrades and data sets indicative of levels of operation parameter features a user is entitled to use. The portable system still further comprises a communications link established between the module and the camera, and software operating on the module for reading and updating the set of operation parameters based upon the data set.
- In yet another advantageous embodiment a portable system for upgrading control unit operational parameters in the field is provided comprising, a field programmable camera, a set of operation parameters for controlling the control unit, and a data set indicative of a level of features a user is entitled to utilize in connection with the control unit. The portable system further comprises a system storage accessible by the control unit for storing the set of operation parameters and the data set, a portable upgrading module for updating the set of operation parameters and a module storage for storing operation parameter upgrades and data sets indicative of levels of operation parameter features a user is entitled to use. The portable system still further comprises a communications link established between the module and the control unit, and software operating on the module for reading and updating the set of operation parameters based upon the data set.
- The invention and its particular features and advantages will become more apparent from the following detailed description considered with reference to the accompanying drawings.
- FIG. 1 is a block diagram of the video imaging system illustrating a camera, channel connections, a control unit, and an illuminating light source.
- FIG. 2 is a depiction of a camera with a sectional view of an attached cable assembly, the control unit and the light source.
- FIG. 3 is a depiction of the control unit, the receptacle, the connector attached to the cable, and the light source.
- FIG. 4 is a depiction of the connector assembly to be advanced into the receptacle.
- FIG. 5 is a front section view of the receptacle.
- FIG. 6 is an assembly drawing of the receptacle.
- FIG. 7 is a top section view of the control unit of FIG 1 depicting the light source guide entering the control unit from the rear and connecting with the cable through the receptacle.
- FIG. 8 is a side section view of the control unit of FIG 1 depicting the light source guide entering the control unit from the rear and connecting with the cable through the receptacle.
- FIG. 9 is a depiction of a section of the camera of FIG. 2 showing four channels comprising eight electrical conductors.
- FIG. 10 is a depiction of a light source mounted within a control unit.
- FIG. 11 is a block diagram of a camera assembly showing a control unit having a first set of data processing instructions and coupled to a camera having a second set of data processing instructions and an update module.
- FIG. 12 is a block diagram of the camera assembly of FIG. 11 showing an interchangeable third set of data processing instructions.
- FIG. 13 is a block diagram of the camera assembly of FIGS. 11 and 12 showing interchangeable data processing instructions.
- FIG. 14 is a block diagram of the camera assembly of FIGS. 11, 12 and 13 showing the control unit and camera in communication with peripheral devices.
- Referring now to the drawings, wherein like reference numerals designate corresponding structure throughout the views.
- FIG. 1 illustrates an advantageous embodiment of the
video imaging system 100. Acamera head 105 is provided having amultiplexer 110 for multiplexing image data and control signals. Acamera control unit 115 is provided with amultiplexer 120 for receiving and processing the multiplexed signal from thecamera head 105. Acommand signal channel 125 is provided interconnectingcamera head 105 andcamera control unit 115. Thecommand signal channel 125 allows command signals to be sent from thecamera control unit 115 to thecamera head 105. Command signals include any signal transmitted from the camera control unit to the camera head. Acontrol signal channel 130 is provided interconnectingcamera head 105 andcamera control unit 115. Thecontrol signal channel 130 allows control signals to be sent from thecamera head 105 to thecamera control unit 115. Control signals include any signal transmitted from the camera head except image data, and may include signals such as: software programs, operating information, timing signal data, camera head identification information, camera use information and the like. Animage data channel 135 is provided interconnectingcamera head 105 andcamera control unit 115. Theimage data channel 135 allows image data to be sent from thecamera head 105 to thecamera control unit 115 for processing. - Through
multiplexer 110 thecontrol signal 130 and theimage data 135 are transmitted down the same physical pair of wires, and thecommand signal 125 is transmitted on a second pair of wires. - Alternatively, for further cable size reduction, the command signal may also be multiplexed with the control signal and image data and therefore be transmitted down the same physical wire, thereby reducing the number of wires to one pair. It is well known in the art that multiplexers 110 and 120 may perform both multiplexing and de-multiplexing functions. The video imaging system utilizes a digital serial protocol such as Low-Voltage Differential Signaling.
- Further, it will be apparent to those skilled in the art that additional pairs of wires may be supplied for image data, control signals, and command signals for future data carrying requirements as new systems become available.
- A
light source guide 140 is also furnished to provide illuminating light fromlight source 145, throughcamera control unit 115, tocamera head 105. - A single
protective jacket 150 is also provided, for enclosing thecommand signal channel 125, thecontrol signal channel 130, theimage data channel 135, thelight source guide 140, and any additional channels that may be utilized. - FIG. 2 illustrates an advantageous embodiment of the
video imaging system 200. Acamera head 205 is provided having acable 210. In this embodiment, thecable 210 is permanently attached to thecamera head 205. However, it is contemplated that thecable 210 may also be detachably connected to thecamera head 205. Thecamera head 205 is equipped with animager 215 for receiving photonic energy 220 reflected off an object (not shown). Thecamera head 205 is also equipped with amultiplexer 225 for multiplexing various signals generated by thecamera head 205. The various signals may include for instance: image data generated by theimager 215, and control signals generated by thecamera head 205. In FIG. 2, thevideo imaging system 200 further comprises anendoscope 260 wherein thecamera head 205 receives light 270 from thelight source 255 and transmits the light 270 to theendoscope 260. The light 270 is transmitted through thecamera head 205. The light 270 is transmitted from thecamera head 205 to theendoscope 260 through anintermediate coupling 275 mounted to thecamera head 205 and acable 280 for connecting theintermediate coupling 275 and theendoscope 260. - The
cable 210 includes alight guide channel 230 for transmitting illuminating light to thecamera head 205. Thecable 210 further includesdata channels 235 for transmitting data to and from thecamera head 205 and theCCU 240. Fourdata channels 235 are depicted in FIGS. 2 and 10, however fewer ormore data channels 235 may be utilized. Image data and control signals are multiplexed in thecamera head 205 by themultiplexer 225 for transmission alongdata channels 235. One of thedata channels 235 may be utilized for the multiplexed signal, or any number or combination ofdata channels 235 may be utilized. Thecable 210 is also provided with aprotective jacket 245, encasing thelight guide channel 230 and thedata channels 235. FIG. 9 depicts a section of the camera head of FIG. 2 showing four channels comprising eightelectrical conductors 235 a - h. Further in FIG. 2, thecable 210 engages thecamera head 205 so as to direct light 270 longitudinally completely through thecamera head 205. FIG. 10 is a depiction of alight source 255 mounted within acamera control unit 240. - In this advantageous embodiment it is contemplated that the
CCU 240 may also be provided with amultiplexer 250 for multiplexing command signals, and for demultiplexing the image data and control signals sent from thecamera head 205. It is contemplated thatmultiplexers light source 255 is also provided for generating illuminating light for the transmission by thelight guide channel 230 to thecamera head 205. Thecable 210 is detachably connected to theCCU 240 as disclosed in FIGS. 3-8. - Referring to FIGS. 3-8, and particularly FIG. 3, a connector assembly for an endoscope assembly provides a connection between a
camera head 305 and a source of light 310 through aCCU 315 having afront portion 330 and arear portion 335. Acable 320 extending from the camera head carries a light source guide and at least one wire pair transmitting electronic signals between the CCU and the camera head. Alight source cable 325 extends from thelight source 310 through the CCU and directly engages thecable 320 in the CCU. - Referring to FIG. 4, the connector assembly includes a
plug 405 provided with a moldedbody 410. Alight connector 415 extends from afront surface 420 of the moldedbody 410, whereas an electrical connection, which is mostly encased in the moldedbody 410, has a keyededge connector 425 projecting beyond thefront surface 420. As clearly seen in FIG. 4, thelight connector 415 and thekeyed edge connector 425 extending through theplug 405 are in a fixed spatial relationship. - The
keyed edge connector 425 can be selected from a great variety of electrical connectors and, in the present case, is shown as a printed wiring board. Thekeyed edge connector 425 preferably terminates in the same plane as thelight connector 415. However, it is contemplated within the scope of the invention to provide an arrangement where thekeyed edge connector 425 and thelight connector 415 extend from thefront surface 420 of the moldedbody 410 at different distances. Such structure provides for mating components of the receptacle to be similarly positioned with respect to one another. Thelight connector 415 is shown above thekeyed edge connector 425. However, it is possible to arrange the components in many different arrangements. It is however, advantageous to maintain a fixed spatial relationship as to the components in utilizing the various arrangements. - As further shown in FIG. 4, the molded
body 410 has keyingsurfaces 430 for the plug as well as protection for thelight connector 415 and thekeyed edge connector 425 by extending from thefront surface 420 beyond these connectors. Theplug 405 is introduced through the front side. 330 of the CCU (FIG. 3) into areceptacle opening 435. Each of the keying surfaces 430 has the geometry that allows the plug to enter the receptacle only in a predetermined spatial position. Exclusively, for illustrative purposes, each of the keying surfaces 430 of FIG. 4 has twostraight portions - The keying surfaces 430 are shaped and sized to place the
plug 405 in a unique spatial position with respect to areceptacle 450 by extending complementary to an innerperipheral surface 455 of theopening 435 at the entry point for theplug 405. The plug is advanced 460 into thereceptacle 450 as indicated to provide engagement betweenlight connector 415 and keyededge connector 425 withoptical component 505 andelectrical component 510 respectively, as shown in FIG. 5. The position of theoptical component 505 andelectrical component 510 is a mirror image of the configuration of thelight connector 415keyed edge connector 425 respectively. Furthermore, agrounding plate 605, seen in FIG. 6, is provided with a plurality of spaced-apart,resilient fingers 610 seen in FIGS. 5 and 6, which extend slightly above abottom edge 515 of theopening 435 seen in FIG. 4. - The
receptacle 450 has ahousing 615, as seen in FIG. 6, provided with a detachablefront panel 620. Thefront panel 620 has afront flange 625 lying flush with thefront side 330 of the CCU when assembled. To provide a correct position of thefront panel 620 with respect to thehousing 615, each of thesides 630 has anelongated recess 635 receiving arespective lug 640 formed on thehousing 615. - The
housing 615 receives an optical connector component of thelight source cable 325 extending through therear portion 335 of the CCU and thelight connector 415 and thekeyed edge connector 425 of theplug 405. Achamber 645 is sized so that the moldedbody 410 of theplug 405 extends at its full length into thereceptacle 450 in an engaged position where thelight connector 415 and thekeyed edge connector 425 of theplug 405 engage respective components of thereceptacle 450. - The
housing 615 is further provided with acollar 650 extending toward therear portion 335 of theCCU 315 and receiving aguide element 705 as seen in FIG. 7, that linearly spans the distance between therear portion 335 of theCCU 315 and thereceptacle 450. An inner end of theguide element 705 slides against thecollar 650 and abuts aseat 805 as seen in FIG. 8, of thehousing 615 of thereceptacle 450. An end of thelight source cable 325 having an optical connection component extends beyond theguide element 705 and terminates in arear wall 655 of thechamber 645. Thus, thelight source cable 325 is mounted within thereceptacle 450 in a fixed spatial position and is aligned with thecable 320 after the moldedbody 410 of theplug 405 is registered with theopening 435 of thefront panel 620. - To provide an electrical connection between the camera head and the remaining CCU components, the
receptacle 450 includes anelectrical component 510 comprising asocket 660. Thesocket 660 is in the same fixed spatial relationship with theoptical component 505. - To prevent the high intensity light from the source of light 310 from escaping the
CCU 315, thereceptacle 450 is provided with alight deflector 665, which is mounted to block the light from exiting theCCU 315 from thelight source cable 325 when theplug 405 is withdrawn from thereceptacle 450. Abottom portion 675 bridges spaced apartwalls 670 of thelight deflector 665. Thedeflector 665 is sized so that the keying surfaces 430 of theplug 405 contacts thebottom portion 675 as theplug 405 is advanced into thereceptacle 450. Thelight deflector 665, which is pivotally mounted by means of apin 680 extending between the spaced apartwalls 670 and mounted on thehousing 615 of thereceptacle 450, swings out of a light path. As the plug is withdrawn from thereceptacle 450, thelight deflector 665 swings back into the light path to confine the light inside theCCU 315. - To ensure that the
pin 680 is not displaced from thehousing 615, aflange 685 provided on thefront panel 620 covers a recessedportion 690. Thus, thepin 680 may rotate between the bottom of thechamber 645 and theflange 685. Thechamber 645 is dimensioned to have therear wall 655 juxtaposed with an edge 695 of the spaced apartwalls 670 along the entire path of thelight deflector 665, as theplug 405 is being advanced or withdrawn from thereceptacle 450. Furthermore, therear wall 655 has a curvature of the same radius as the edge 695. As shown, the spaced apartwalls 670 of thelight deflector 665 have a triangular cross-section; however, any other cross-section allowing thelight deflector 665 to swing into and out of the light path can be easily implemented. Only one advantageous embodiment is illustrated in the figures, however it will be apparent to those skilled in the art that many different embodiments may be possible for implementing thelight deflector 665. For instance, the light deflector may be rotatable, to rotate into the path of the light as shown, but it may also be slideable, or alternatively a sensor for sensing the presence of theplug 405 in thereceptacle 450, may act to disconnect, obstruct, attenuate or turn off the source of light 310 upon removal of theplug 405 from thereceptacle 450. Any of these or other methods may be utilized to prevent the light from escaping upon disconnection. - In Figure 11 a
camera assembly 1000 is shown. Thecamera assembly 1000 comprises at least onecamera 1002 configured to generateelectronic imaging data 1010. Theelectronic imaging data 1010 includes for example, the aforementioned command and control signals and image data of Figure 1. Acontrol unit 1006 is detachably coupled at 1012 to the at least onecamera 1002 and receptive of theimaging data 1010. A first set of data processing instructions (CEl1) 1008 are stored instorage 1020 in thecontrol unit 1006 for processing theimaging data 1010. A second set of data processing instructions (CEl2) 1004 reside instorage 1022 on the at least onecamera 1002 for processing theimaging data 1010 based upon the first set of prescribed imaging functions. The aforementioned processing of theimaging data 1010 includes, for example, sending, receiving, storing, sorting, ordering, digitizing, multiplexing or otherwise performing signal or data processing on theimaging data 1010. -
Update module 1030 is also illustrated in Figure 11.Update module 1030 includes storage 1032 having updated data processing instructions (CEl1 ... CEln) 1034 located thereon for updating of the various data processing instructions. Two connections are shown in dashedlines 1036' and 1036" illustrating thatupdate module 1030 may be connected to eithercamera 1002 orcontrol unit 1006 for updating of the various data processing instructions (GEl1 ... CEln). It should be noted thatupdate module 1030 may further be indirectly coupled tocamera 1002 throughcontrol unit 1006. -
Update module 1030 may be coupled tocamera 1002 and/orcontrol unit 1006 either by direct connection or wirelessly. It is contemplated that a wireless connection may comprise but is not limited to for instance, an infrared coupling, but may also include any other suitable coupling means such as RF, inductive, and other wireless methods. Alternatively, if the coupling means is a direct connection, theupdate module 1030 may comprise for instance, a card that is inserted intocontrol unit 1006 and/orcamera 1002. In either instance,update module 1030 may be used to provide updated data processing instructions tocamera 1002 and/orcontrol unit 1006. - It is further contemplated that
update module 1030 may be utilized to ascertain the update and user rights for instance, authorized the user for a.particular camera 1002 and/orcontrol unit 1006. This is advantageous because a technician may visit a client and with theupdate module 1030, ascertain what if any updates and/or upgrades the user is entitled to based upon reading data that may be stored oncamera 1002 and/orcontrol unit 1006 and then provide any additional functionality and/or updates the user is entitled to. This provides for minimal down-time for routine software upgrades which allows the user to maintain fewer cameras in stock because they do not have to be sent out to the factory for upgrading. The automatic authorization reading functionality also means that fewer mistakes will be made by the technician as theupdate module 1030 will determine what rights the user has contracted. - It is further contemplated that
update module 1030 will gather from thecamera 1002 and/orcontrol unit 1006 data that may include for instance but is not limited to the software version number, model number, serial number, date of manufacture, service dates, software upgrade dates, owner data, and device location ofcamera 1002 and/orcontrol unit 1006. This information may be advantageously stored on saidupdate module 1030 in storage 1032 for later transmission to a computer (not shown). It is also contemplated that this camera and/or control unit data may be directly transmitted over a network to a computer system for compliance with governmental regulations. In any event, theupdate module 1030 may be utilized to gather this information for reporting purposes, which may take the form of for instance, a report. - In Figure 12, a third set of data processing instructions (CEl3) 1014 is interchangeable with the second set of
data processing instructions 1004 and are operative in processing theimaging data 1010. - In general, the camera includes imaging functions characteristic of the
camera 1002 such as camera exposure (shutter speed), camera focus, camera zoom, camera rotation or photo dynamic diagnosis. Theelectronic imaging data 1010 is conveyed between thecamera 1002 and thecontrol unit 1006 by way of the command signal, control signal andimage data channels camera 1002 can be configured to operate differently based upon the instructions that are stored in thecamera 1002. In particular the camera is configured to operate according to a set of data processing instructions specific to eachcamera 1002 and stored in eachcamera 1002. This allows eachcamera 1002 to provide the data processing instructions necessary to support any unique features that the camera may have. Multiple camera types may be used. Camera types comprise a combination of characteristics, such as: standard or direct coupling interface (DCI), National Television System Committee (NTSC) or Phase Alternating Line (PAL) one chip, NTSC or PAL three chip or progressive scan sensors, photodynamic diagnosis (PDD) enabled or disabled, rotation, zoom and or focus enabled or disabled. Each camera type is configured to operate differently based upon the set of data processing instructions stored therein. - As seen in Figures 11 and 12 the second set of
data processing instructions 1004 and the third set ofdata processing instructions 1014 are interchangeable and both compatible with the first set ofdata processing instructions 1008. Thus, should thecamera 1002 be used in different environments, the interchangeabledata processing instructions camera 1002 is used in arthroscopic surgery, the second set ofdata processing instructions 1004 would be operative in the camera 1002 (Fig. 11). However, if thecamera 1002 is used in intestinal surgery, the third set ofdata processing instructions 1014 would be operative in the camera 1002 (Fig. 12). - In Figure 13 a plurality of data processing instructions (108, 1004, 1014, 1026) are stored in
storage 1020. Upon connection ofcamera 1002 withcontrol unit 1006,control unit 1006 readscamera data 1024 and determines the correct data processing instructions to utilize. It is contemplated that the selected data processing instructions may be utilized oncontrol unit 1006, oncamera 1002 and/or both. It is further contemplated that any number of data processing instructions may be stored onstorage 1020. Whilestorage 1020 is shown located incontrol unit 1006, it is yet further contemplated that the storage may be local or remote to controlunit 1006, for instance but not limited to connection over a network or internetwork. - It should further be noted that although updated module 1030 (Figure 11) is not illustrated in Figures 12 and 13, it is contemplated that it is fully compatible those systems providing upgraded functionality and updated data according to the user's licensed rights.
- Figure 14 is a schematic representation of a
camera assembly 2000 of Figures 11, 12 and 13 showing thecontrol unit 2002 in communication with certain peripheral devices, such as a keyboard (KBD) 2012, a communications network (NET) 2016, a monitor (MON) 2020 and a recorder (REC) 2022. Acamera 2004 is incommunication 2010 with an endoscope (END) 2006 or other medical device and with thecontrol unit 2002 at 2008. - Thus, based upon the foregoing description, a camera assembly is disclosed wherein a camera is adapted to generate electronic image data. A control unit is detachably coupled to the camera and receptive of the image data. A plurality of data processing instructions for processing the imaging data is stored in the camera and/or the control unit. When the camera is coupled to the control unit, the plurality of data processing instructions transfer the imaging data from the camera to the control unit.
- Although the invention has been described with reference to a particular arrangement of parts, features and the like, these are not intended to exhaust all possible arrangements or features, and indeed many other modifications and variations will be ascertainable to those of skill in the art.
Claims (29)
- A camera assembly, comprising:a camera for generating image data;a control unit detachably coupled to said camera and receptive of the image data;camera operating instructions stored on said camera; andcontrol unit operating instructions stored on said control unit;
wherein when said camera is coupled to said control unit, said camera operating instructions on said camera cooperate with said control unit operating instructions on said control unit to transfer and process the image data from said camera to said control unit; and
wherein the image data is stored on both said camera and said control unit. - The camera assembly according to Claim 1 wherein the camera operating instructions comprise a device driver.
- The camera assembly according to Claim 1 or 2, further comprising an endoscope in communication with the said camera.
- The camera assembly according to anyone of Claims 1 through 3 wherein said camera is coupled to said control unit via a cable comprising both an electrical and an optical channel.
- A portable system for upgrading camera operational parameters in the field, comprising:a field programmable camera;a set of operation parameters for controlling said camera;a data set indicative of a level of features a user is entitled to utilize in connection with said camera;a system storage accessible by said camera for storing said set of operation parameters and said data set;a portable upgrading module for updating said set of operation parameters;a module storage for storing operation parameter upgrades and data sets indicative of levels of operation parameter features a user is entitled to use;a communications link established between said module and said camera;software operating on said module for reading and updating said set of operation parameters based upon the data set.
- The portable system according to Claim 5 wherein said system storage is located on said camera.
- The portable system according to Claim 5 or 6 wherein said communications link comprises a wireless connection between said camera and said module.
- The portable system according to Claim 7 wherein said wireless connection comprises an infra-red connection.
- The portable system according to anyone of Claims 5 through 8 wherein said module comprises a card.
- The portable system according to Claim 9 wherein said card is insertable into a control unit which is coupled to said camera.
- The portable system according to Claim 10 wherein said communications link established between said module and said camera extends through the control unit.
- The portable system according to anyone of Claims 5 through 11 wherein said portable upgrading module gathers camera data related to said field programmable camera.
- The portable system according to Claim 12 wherein the camera data is selected from the group consisting of: software version number, model number, serial number, date of manufacture, service dates, owner data, device location, maintenance data, hardware version number, and service location.
- The portable system according to Claim 12 or 13 wherein the camera data is stored on said portable upgrading module.
- The portable system according to anyone of Claims 12 through 14 wherein the camera data is transmitted to a computer.
- The portable system according to Claim 15 wherein the camera data is transmitted over a network.
- The portable system according to Claim 16 wherein the camera data is transmitted in the form of a report to a regulatory agency.
- A portable system for upgrading control unit operational parameters in the field, comprising:a field programmable control unit;a set of operation parameters for controlling said control unit;a data set indicative of a level of features a user is entitled to utilize in connection with said control unit;a system storage accessible by said control unit for storing said set of operation parameters and said data set;a portable upgrading module for updating said set of operation parameters;a module storage for storing operation parameter upgrades and data sets indicative of levels of operation parameter features a user is entitled to use;a communications link established between said module and said control unit;software operating on said module for reading and updating said set of operation parameters based upon the data set.
- The portable system according to Claim 18 wherein said system storage is located on said control unit.
- The portable system according to Claim 18 or 19 wherein said communications link comprises a wireless connection between said control unit and said module.
- The portable system according to Claim 20 wherein said wireless connection comprises an infra-red connection.
- The portable system according to anyone of Claims 18 through 21 wherein said module comprises a card.
- The portable system according to Claim 22 wherein said card is insertable into said control unit.
- The portable system according to anyone of Claims 18 through 23 wherein said portable upgrading module gathers control unit data related to said field programmable control unit.
- The portable system according to anyone of Claims 18 through 24 wherein the control unit data is selected from the group consisting of: software version number, model number, serial number, data of manufacture, service dates, owner data, device location, maintenance data, hardware version number, and service location.
- The portable system according to anyone of Claims 18 through 25 wherein the control unit data is stored on said portable upgrading module.
- The portable system according to anyone of Claims 18 through 26 wherein the control unit data is transmitted to a computer.
- The portable system according to Claim 27 wherein the control unit data is transmitted over a network.
- The portable system according to Claim 28 wherein the control unit data is transmitted in the form of a report to a regulatory agency.
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US11/032,266 US7520853B2 (en) | 2001-12-28 | 2005-01-10 | Updateable endoscopic video imaging system |
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Also Published As
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US7520853B2 (en) | 2009-04-21 |
JP2011136179A (en) | 2011-07-14 |
JP4727428B2 (en) | 2011-07-20 |
EP1679030B1 (en) | 2011-06-01 |
CA2532526A1 (en) | 2006-07-10 |
CA2532526C (en) | 2014-03-11 |
JP2006218292A (en) | 2006-08-24 |
US20050200698A1 (en) | 2005-09-15 |
JP5404665B2 (en) | 2014-02-05 |
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